Thank you for your reply and clarification. That could be a possibility now that I think about it. Maybe his results have been false negatives. I’m asymptomatic so I have no recollection of when I could have infected him.
Could you elaborate more on the IgG levels? I had read somewhere else that the higher the antibodies the longer it’s been in your system but I understand now that that’s not the case.
Does the IgG level then go higher and lower throughout someone’s life?